Weight & Balance Calculator
Compute CG (center of gravity) from station weights — verify against forward/aft limits.
How to Use
- Add a row for each loading station (pilot, passengers, bags, fuel).
- Enter weight and arm.
- CG is computed as Σ(W·A) / Σ(W).
| Cessna 172 | 35–47.3 in · 2450 lb |
| Piper PA-28 Cherokee | 83–93 in · 2440 lb |
| Beechcraft Bonanza A36 | 74–85 in · 3650 lb |
Show Work
Formula
About the Weight & Balance Calculator
The Weight & Balance Calculator gives you a fast, free answer for flight planning and aircraft performance without sending anything off your device. Compute CG (center of gravity) from station weights — verify against forward/aft limits.
How it works
Enter your figures and the result appears instantly, updating the moment you change anything. There is no submit button and nothing to wait for, so it is easy to try a few what-if numbers and compare the results. Just check each box holds the kind of value it expects.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
Where does arm come from?
Station arms are listed in the aircraft's Pilot Operating Handbook weight & balance section.
How do I use the Weight & Balance Calculator?
Just type your numbers. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Does it cost anything or need an account?
No. The tool is completely free, there is no account to create, and it keeps working offline after the page first loads.
Is anything I type uploaded?
No. The tool works entirely on your device, so the values you enter never leave your browser.
Common Use Cases
Learn while you do it
Seeing what you put in and what comes out helps you understand how they fit together.
Get an answer fast
Type what you have and get the answer in seconds — on a phone, tablet, or computer.
Try different numbers
Change one thing and watch the answer change. It is an easy way to compare your choices.
Stays on your device
Your inputs never leave the browser — nothing is uploaded, logged, or stored anywhere.
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